In the hypothetical scenario where Apple could either release the HomePod in February or could have diverted some resources to also shipping a HomePad 'Dot' alongside it which would have shifted the timeline back several months, I'm sure almost everybody would agree that the former option is the better. Ideally, Apple would also ship a HomePod 'Dot' later this year.
Though there might a bit of a clash with the market positioning. The HomePod costs significantly more than the, eg, the Amazon Echo. Apple largely justifies this with the better audio quality. Releasing a HomePod 'Dot', which by definition would have worse audio puts Apple a bit in a quandary. If it charges similar prices as for the Echo Dot, the price difference between the HomePod and the HomePod 'Dot' would be very large, only 'justified' by the audio quality. Many people might look at the big savings and get the HomePod 'Dot' instead of the full-size HomePod. If, on the other hand, Apple charges let's say half the price of the HomePod for the HomePod 'Dot', it would sell a product much more expensive than the Echo Dot without any clear justification for the price difference. This is a mild version of what has been sometimes called a
strategy tax.